Let original amount be x
[tex]\\ \tt\Rrightarrow 0.33x=18.5[/tex]
[tex]\\ \tt\Rrightarrow x=18.5/0.33[/tex]
[tex]\\ \tt\Rrightarrow x=56.06oz[/tex]
[tex] \huge \sf \dag Answer : [/tex]
suppose, x = lots of cereal now.
[tex]\longmapsto \rm 33\%y = 18.5ounces[/tex]
[tex]\longmapsto \rm y = \frac{18.5ounces}{33\%}[/tex]
[tex]\longmapsto \rm y = \boxed{\bold{56.06ounces}}[/tex]